The Z0107MN6AA4 is a Schmitt Trigger Optoisolator by STMicroelectronics. It is a 4-channel optocoupler with a 5.0 kV isolation voltage. It has a 1.5 mA forward current, a 7.5 mA operating current, a 40 mA peak output current and a CTR range (Current Transfer Ratio) of 400 - 800%. This device is designed to interface two dissimilar circuits, digital and analog, in order to provide signal isolation, in order to help reduce noise, improve signal integrity and ensure greater system accuracy.